The Firing Line Forums - View Single Post - Concerned about some extra copper on the rifling near the crown

reynolds357 · December 30, 2012, 08:57 PM

If its not a hand lapped barrel chances are you will see this. Shoot too many rounds without cleaning through a hand lapped barrel and you will see it. Just clean it till it comes out. It took me 4 days to get my 257 wby clean. To me, it s clean when Montana extreme sets in the barrel 45 minutes and the patch comes out with absolutely no blue on it. Get a Rod and use a good copper solvent. I recommend Montana Extreme but there are many as good and probably some better, but it works for me.

December 30, 2012, 08:57 PM	#9
reynolds357 Senior Member Join Date: December 10, 2012 Posts: 6,165	If its not a hand lapped barrel chances are you will see this. Shoot too many rounds without cleaning through a hand lapped barrel and you will see it. Just clean it till it comes out. It took me 4 days to get my 257 wby clean. To me, it s clean when Montana extreme sets in the barrel 45 minutes and the patch comes out with absolutely no blue on it. Get a Rod and use a good copper solvent. I recommend Montana Extreme but there are many as good and probably some better, but it works for me.